diff --git a/components/menu/style/index.less b/components/menu/style/index.less
index 7c3dcf5d51..675691f052 100644
--- a/components/menu/style/index.less
+++ b/components/menu/style/index.less
@@ -204,6 +204,7 @@
   &-submenu {
     &-popup {
       position: absolute;
+      border-radius: @border-radius-base;
     }
 
     > .@{menu-prefix-cls} {
@@ -485,7 +486,6 @@
   &-dark &-sub {
     color: @text-color-secondary-dark;
     background: @menu-dark-bg;
-    box-shadow: 0 2px 8px rgba(0, 0, 0, .45) inset;
     .@{menu-prefix-cls}-submenu-title .@{menu-prefix-cls}-submenu-arrow {
       opacity: .45;
       transition: all .3s;
@@ -498,6 +498,7 @@
 
   &-dark &-inline&-sub {
     background: @menu-dark-submenu-bg;
+    box-shadow: 0 2px 8px rgba(0, 0, 0, .45) inset;
   }
 
   &-dark&-horizontal {
@@ -575,7 +576,8 @@
     }
   }
 
-  &&-dark &-item-selected {
+  &&-dark &-item-selected,
+  &-submenu-popup&-dark &-item-selected {
     background-color: @primary-color;
   }